Summary of Significant Accounting Policies | 3. Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States ("GAAP") requires management to make estimates and assumptions affecting the reported amounts of assets and liabilities and contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, the Company evaluates its estimates and assumptions, including those related to allowance for doubtful accounts, inventory reserves, amortization periods, the allocation of purchase price to the fair value of net assets and liabilities acquired in business combinations, fair values used in asset impairment evaluations, valuation of long-lived assets, fair value of redeemable noncontrolling interest, contingencies, income taxes and stock-based compensation expense. The Company bases its estimates on historical experience and various assumptions that it believes are reasonable under the circumstances. The results of the analysis form the basis for making assumptions about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ from those estimates. Revenue Recognition and Concentration of Revenues Revenues are principally earned from long-term contractual agreements to provide online curriculum, books, materials, computers and management services to virtual and blended public schools, traditional schools, school districts, virtual charter schools, and private schools. In addition to providing the curriculum, books and materials, under most contracts, the Company provides management services and technology to virtual and blended public schools, including monitoring academic achievement, teacher hiring and training, compensation of school personnel, financial management, enrollment processing and procurement of curriculum, equipment and required services. The schools receive funding on a per student basis from the state in which the public school or school district is located. Shipments of materials for schools that occur in the fourth fiscal quarter and for the upcoming school year are recorded in deferred revenues. Where the Company has determined that it is the primary obligor for substantially all expenses under these contracts, the Company records the associated per student revenue received by the school from its state funding school district up to the expenses incurred in accordance with Accounting Standards Codification ("ASC") 605, Revenue Recognition . As a result of being the primary obligor, amounts recorded as revenues and school operating expenses for the years ended June 30, 2015, 2014 and 2013 were $338.2 million, $265.2 million and $247.1 million, respectively. For contracts where the Company is not the primary obligor, the Company records revenue based on its net fees earned under the contractual agreement. The Company generates revenues under turnkey management contracts with virtual and blended public schools which include multiple elements. These elements include providing each of a school's students with access to the Company's online school and the component of lessons; offline learning kits, which include books and materials to supplement the online lessons, where required, the use of a personal computer and associated reclamation services; internet access and technology support services; the services of a state-certified teacher, where required; and management and technology services necessary to operate a virtual public or blended school. In certain managed school contracts, revenue is determined directly by per enrollment funding. The Company has determined that the elements of its contracts are valuable to schools in combination, but do not have standalone value. As a result, the elements within the Company's multiple-element contracts do not qualify as separate units of accounting. Accordingly, the Company accounts for revenues under multiple element arrangements as a single unit of accounting and recognizes the entire arrangement based upon the approximate rate at which it incurs the costs associated with each element. Revenue from certain managed schools is recognized ratably over the period services are performed. To determine the pro rata amount of revenues to recognize in a fiscal quarter, management estimates the total funds each school will receive in a particular school year. Total funds for a school are primarily a function of the number of students enrolled in the school and established per enrollment funding levels which are generally published on an annual basis by the state or school district. Management reviews its estimates of funding periodically, and revise as necessary, amortizing any adjustments to earned revenues over the remaining portion of the fiscal year. Actual school funding may vary from these estimates and the impact of these differences could impact the Company's results of operations. Since the end of the school year coincides with the end of the Company's fiscal year, annual revenues are generally based on actual school funding and actual costs incurred (including costs for the Company's services to the schools plus other costs the schools may incur) in the calculation of school operating losses. The Company's schools reported results are subject to annual school district financial audits, which incorporate enrollment counts, funding and other routine financial audit considerations. The results of these audits are incorporated into the Company's monthly funding estimates and for the reported fiscal years ended June 30, 2014, 2013 and 2012, the Company's aggregate funding estimates differed from actual reimbursements impacting total reported revenue by approximately (0.1%), 0.2%, and (0.1%), respectively. Under the contracts where the Company provides turnkey management services to schools, the Company has generally agreed to absorb any operating losses of the schools in a given school year. These school operating losses represent the excess of costs incurred over revenues earned by the virtual or blended public school as reflected on its respective financial statements, including Company charges to the schools. To the extent a school does not receive funding for each student enrolled in the school, the school would still incur costs associated with serving the unfunded enrollment. If losses due to unfunded enrollments result in a net operating loss for the year that loss is reflected as a reduction in the revenue and net receivables that the Company collects from the school. A school net operating loss in one year does not necessarily mean the Company anticipates losing money on the entire contract with the school. However, a school operating loss may reduce the Company's ability to collect its management fees in full and recognized revenues are reduced accordingly to reflect the expected cash collections from such schools. The Company amortizes the estimated school operating loss against revenues based upon the percentage of actual revenues in the period to total estimated revenues for the fiscal year. For turnkey revenue service contracts, a school operating loss may reduce the Company's ability to collect its management fees in full though as noted it does not necessarily mean that the Company incurs a loss during the period with respect to its services to that school. The Company recognizes revenue, net of its estimated portion of school operating losses, to reflect the expected cash collections from such schools. Revenue is recognized based on the Company's performance of services under the contract, which it believes is proportionate to its incurrence of costs. The Company incurs costs directly related to the delivery of services. Most of these costs are recognized throughout the year; however, certain costs related to upfront delivery of printed materials, workbooks, laboratory materials and other items are provided at the beginning of the school year and are recognized as expense when shipped. Each state or school district has variations in the school funding formulas and methodologies that it uses to estimate funding for revenue recognition at its respective schools. As the Company builds the funding estimates for each school, it is mindful of the state definition for count dates on which reported enrollment numbers will be used for per pupil funding. The parameters the Company considers in estimating funding for revenue recognition purposes include school district count definitions, withdrawal rates, average daily attendance, special needs enrollment, student demographics, academic progress and historical completion, student location, funding caps and other state specified categorical program funding. The estimates the Company makes each period on a school-by-school basis takes into account the latest information available to it and considers material relevant information at the time of the estimate. Management periodically reviews its estimates of full-year school revenues and operating expenses and amortizes the net impact of any changes to these estimates over the remainder of the fiscal year. Actual school operating losses may vary from these estimates or revisions, and the impact of these differences could have a material impact on results of operations. Since the end of the school year coincides with the end of the Company's fiscal year, annual revenues are generally based on actual school funding and actual costs incurred (including costs for the Company's services to the schools plus other costs the schools may incur) in the calculation of school operating losses. For the years ended June 30, 2015, 2014 and 2013, the Company's revenue included a reduction for these school operating losses of $65.2 million, $49.8 million, and $64.5 million, respectively. The Company provides certain online curriculum and services to schools and school districts under subscription and perpetual license agreements. Revenue under these agreements is recognized in accordance with the ASC 605 when all of the following conditions are met: there is persuasive evidence of an arrangement; delivery has occurred or services have been rendered; the amount of fees to be paid by the customer is fixed and determinable; and the collectability of the fee is probable. Revenue from the licensing of curriculum under subscription arrangements is recognized on a ratable basis over the subscription period. Revenue from the licensing of curriculum under non-cancelable perpetual arrangements is recognized when all revenue recognition criteria have been met. Revenue from professional consulting, training and support services are deferred and recognized ratably over the service period. Other revenues are generated from individual customers who prepay and have access for one to two years to company-provided online curriculum. The Company recognizes these revenues pro rata over the maximum term of the customer contract. Revenues from associated offline learning kits are recognized upon shipment. During the years ended June 30, 2015, 2014 and 2013, approximately 86%, 88% and 86%, respectively, of the Company's revenues were recognized from schools the Company managed. The Company had a contract with one school that represented approximately 14% of revenue during 2015, approximately 13% of revenue in 2014 and about 14% of revenue in 2013. Approximately 9% of accounts receivable was attributable to a contract with one school as of June 30, 2015 and 2014, respectively. In fiscal year 2015, Agora renegotiated its service agreement and entered into a three-year contract with the Company to purchase the Company's curriculum and certain technology services, while the school board assumed daily operational responsibilities, including its charter renewal process and marketing and enrollment activities. The negative impact of this event on revenues attributable to the loss of the management component of the Agora contract, while significant, will be dependent upon the number of enrollments Agora can generate independently and the funding rates approved by the Pennsylvania legislature for cyber-charter schools in fiscal year 2016. Reclassifications The Company has reclassified certain prior year income tax classifications to conform to the current year presentation. There was no effect on related income tax assets or liabilities, or the income statement from such reclassification. The reclassification had no effect on net cash flows. Shipping and Handling Costs Shipping and handling costs are expensed when incurred and are classified as instructional costs and services in the accompanying consolidated statements of operations. Shipping and handling charges invoiced to a customer are included in revenues. Research and Development Costs All research and development costs, including patent application costs, are expensed as incurred. Cash and Cash Equivalents Cash and cash equivalents generally consist of cash on hand and cash held in money market and demand deposit accounts. The Company considers all highly liquid investments with maturities of three months or less when purchased to be cash equivalents. Allowance for Doubtful Accounts The Company maintains an allowance for uncollectible accounts primarily for estimated losses resulting from the inability or failure of individual customers to make required payments. The Company analyzes accounts receivable, historical percentages of uncollectible accounts and changes in payment history when evaluating the adequacy of the allowance for uncollectible accounts. The Company records an allowance for estimated uncollectible accounts in an amount approximating anticipated losses. Actual write-offs might exceed the recorded allowance. Inventories Inventories consist primarily of textbooks and curriculum materials, a majority of which are supplied to virtual and blended public schools and utilized directly by students. Inventories represent items that are purchased and are recorded at the lower of cost (first-in, first-out method) or market value. Excess and obsolete inventory reserves are established based upon the evaluation of the quantity on hand relative to demand. During the years ended June 30, 2015 and 2014, the Company increased the provision for excess and obsolete inventory by $1.4 million and $4.2 million primarily related to the decision to discontinue certain products and excess inventory relative to anticipated demand. The excess and obsolete inventory reserve at June 30, 2015 and 2014 was $2.2 million and $9.1 million, respectively. The reduction in the reserve during the year ended June 30, 2015 is primarily due to the disposal of previously reserved inventory. Other Current Assets Other current assets consist primarily of textbooks, curriculum materials and other supplies which are expected to be returned upon the completion of the school year. Materials not returned are expensed as part of instructional costs and services. Property and Equipment Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation expense is calculated using the straight-line method over the estimated useful life of the asset (or the lesser of the term of the lease and the estimated useful life of the asset under capital lease). Amortization of assets capitalized under capital lease arrangements is included in depreciation and amortization expense. Leasehold improvements are amortized over the lesser of the lease term or the estimated useful life of the asset. The Company determines the lease term in accordance with ASC 840, Leases , as the fixed non-cancelable term of the lease plus all periods for which failure to renew the lease imposes a penalty on the lessee in an amount such that renewal appears, at the inception of the lease, to be reasonably assured. Property and equipment are depreciated over the following useful lives: Useful Life Student computers 3 years Computer hardware 3 years Computer software 3 - 5 years Web site development 3 years Office equipment 5 years Furniture and fixtures 7 years Leasehold improvements 3 - 12 years During the year ended June 30, 2014, the Company updated the estimate of unreturned student computers based on an analysis of recent trends of returns and utilization rates, as well as information obtained from the student computer processing systems. As a result, during the year ended 2014 the Company recorded accelerated depreciation of $6.5 million for computers that the Company estimates will not be returned by students. During the year ended June 30, 2015, the Company continued to perform this analysis and as a result recorded $5.0 million in accelerated depreciation related to this estimate. The Company recorded no accelerated depreciation related to these estimates for the year ended June 30, 2013. In addition, during the year ended June 30, 2015, the Company wrote down approximately $4.8 million of capitalized software projects after determining the assets either have no future use or are being sunset. Further, during the fiscal year ended June 30, 2015, the Company wrote down approximately $6.5 million primarily related to computer peripherals and other fixed assets shipped to students, and for which no reclamation will be processed. The Company recorded no such write-downs during the year ended June 30, 2013. Capitalized Software The Company develops software for internal use. Software development costs incurred during the application development stage are capitalized in accordance with ASC 350, Intangibles—Goodwill and Other . The Company amortizes these costs over the estimated useful life of the software, which is generally three years. Capitalized software development costs are stated at cost less accumulated amortization. Capitalized software development additions totaled $33.8 million, $26.6 million and $23.4 million for the years ended June 30, 2015, 2014 and 2013, respectively. During the year ended June 30, 2014, the Company wrote down approximately $3.8 million of capitalized software projects after determining the assets either have no future use or are being sunset. There were no material write-downs of capitalized software projects for the year ended June 30, 2013. Amortization expense for the years ended June 30, 2015, 2014 and 2013 was $26.8 million, $20.1 million and $14.7 million, respectively. Capitalized Curriculum Development Costs The Company internally develops curriculum, which is primarily provided as online content and accessed via the Internet. The Company also creates textbooks and other materials that are complementary to online content. The Company capitalizes curriculum development costs incurred during the application development stage in accordance with ASC 350. The Company capitalizes curriculum development costs during the design and deployment phases of the project. Many of the Company's new courses leverage off of proven delivery platforms and are primarily content, which has no technological hurdles. As a result, a significant portion of the Company's courseware development costs qualify for capitalization due to the concentration of its development efforts on the content of the courseware. Capitalization ends when a course is available for general release to its customers, at which time amortization of the capitalized costs begins. The period of time over which these development costs will be amortized is generally five years. Total capitalized curriculum development additions were $18.1 million, $15.4 million and $18.6 million for the years ended June 30, 2015, 2014 and 2013, respectively. These amounts are recorded on the accompanying consolidated balance sheets, net of amortization and impairment charges. Amortization charges are recorded in instructional costs and services on the accompanying consolidated statements of operations. Amortization expense for the years ended June 30, 2015, 2014 and 2013 was $20.1 million, $19.0 million and $14.3 million, respectively. The Company wrote down approximately $2.6 million and $2.2 million of capitalized curriculum development costs due to an assessment of recoverability of certain curriculum, as well as a decision to discontinue certain curriculum during the years ended June 30, 2015 and 2014. There were no material write-downs of capitalized curriculum development costs for the year ended June 30, 2013. Noncontrolling Interest Earnings or losses attributable to other stockholders of a consolidated affiliated company are classified separately as "noncontrolling interest" in the Company's consolidated statements of operations. Net loss attributable to noncontrolling interest reflects only its share of the after-tax earnings or losses of an affiliated company. Income taxes attributable to noncontrolling interest are determined using the applicable statutory tax rates in the jurisdictions where such operations are conducted. The Company's consolidated balance sheets reflect noncontrolling interests within the equity section of the consolidated balance sheets, except for redeemable noncontrolling interests. Noncontrolling interest was classified separately in the Company's consolidated statements of stockholders' equity. Except for the redeemable non-controlling interests, the businesses with non-controlling interests were sold during fiscal 2014, and therefore the Company no longer has these non-controlling interests after the sale date. Redeemable Noncontrolling Interests Noncontrolling interests in subsidiaries that are redeemable outside of the Company's control for cash or other assets are classified outside of permanent equity at redeemable value, which approximates fair value. However, if the redemption amount is other than fair value (e.g. fixed or variable), the redeemable noncontrolling interest is accounted for at the fixed or variable redeemable value. The redeemable noncontrolling interests are adjusted to their redeemable value at each balance sheet date. The resulting increases or decreases in the estimated redemption amount are affected by corresponding charges against retained earnings, or in the absence of retained earnings, additional paid-in-capital. Goodwill and Intangible Assets The Company records as goodwill the excess of purchase price over the fair value of the identifiable net assets acquired. Finite-lived intangible assets acquired in business combinations subject to amortization are recorded at their fair value. Finite-lived intangible assets include trade names, acquired customers and non-compete agreements. Such intangible assets are amortized on a straight-line basis over their estimated useful lives. As of June 30, 2015 and 2014, finite-lived intangible assets were recorded at $37.4 million and $37.4 million, respectively, and accumulated amortization of $16.2 million and $13.7 million, respectively. Amortization expense for the years ended June 30, 2015, 2014 and 2013 was $2.6 million, $8.0 million and $4.6 million, respectively. During the year ended June 30, 2014, the Company determined that based on rebranding of the Institutional Sales business, the Company fully amortized certain trade names that are no longer going to be used and recorded a $5.2 million impairment charge. There was no material impairment charge for the years ended June 30, 2015 and 2013. Future amortization of intangible assets is $2.5 million, $1.9 million, $1.9 million, $1.9 million and $1.9 million in the years ended June 30, 2016 through June 30, 2020, respectively and $10.7 million thereafter. As of June 30, 2015 and 2014, the goodwill balance was $66.2 million and $58.1 million, respectively. The Company reviews its recorded finite-lived intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be fully recoverable. If the total of the expected undiscounted future cash flows is less than the carrying amount of the asset, a loss is recognized for the difference between fair value and the carrying value of the asset. ASC 350 prescribes a two-step process for impairment testing of goodwill and intangibles with indefinite lives, which is performed annually, as well as when an event triggering impairment may have occurred. ASC 350 also allows preparers to qualitatively assess goodwill impairment through a screening process which would permit companies to forgo Step 1 of their annual goodwill impairment process. This qualitative screening process will hereinafter be referred to as "Step 0". Goodwill and intangible assets deemed to have an indefinite life are tested for impairment on an annual basis, or earlier when events or changes in circumstances suggest the carrying amount may not be fully recoverable. The Company has elected to perform its annual assessment on May 31st. The Step 0 analysis focused on a number of events and circumstances that may be considered when making this qualitative assessment. Upon careful consideration of these events and circumstances, the Company recorded no goodwill impairment for the years ended June 30, 2015, 2014 and 2013. As a result of the sale of the business assets during the fiscal year ended June 30, 2014, the Company wrote off goodwill of $3.4 million and net intangibles of $0.4 million associated with these entities. On July 31, 2014, the Company acquired a 51% majority interest in LearnBop Inc. ("LearnBop"), for $6.6 million in cash (see Note 10). The following table represents goodwill additions/reductions during fiscal years ended June 30, 2015, 2014 and 2013: ($ in millions) Amount Goodwill Balance as of June 30, 2013 $ Sale of business assets ) Adjustments due to other foreign exchange translations ​ ​ ​ ​ ​ Balance as of June 30, 2014 $ Acquisition of LearnBop ​ ​ ​ ​ ​ Balance as of June 30, 2015 $ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Intangible Assets : 2015 2014 ($ in millions) Gross Carrying Amount Accumulated Amortization Net Carrying Value Gross Carrying Amount Accumulated Amortization Net Carrying Value Trade names $ $ ) $ $ $ ) $ Customer and distributor relationships ) ) Developed technology ) — ) — Other ) ) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ $ $ ) $ $ $ ) $ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ During fiscal year ended 2014, the Company determined that based on the rebranding of the Institutional business, the Company fully amortized certain trade names that were no longer going to be used and recorded a $5.2 million impairment charge. There were no such impairment charges during fiscal years ended June 30, 2015 and 2013. Impairment of Long-Lived Assets Long-lived assets include property, equipment, capitalized curriculum and software developed or obtained for internal use. In accordance with ASC 360, Property, Plant and Equipment , management reviews the Company's recorded long-lived assets for impairment annually or whenever events or changes in circumstances indicate that the carrying amount of an asset may not be fully recoverable. The Company determines the extent to which an asset may be impaired based upon its expectation of the asset's future usability as well as on a reasonable assurance that the future cash flows associated with the asset will be in excess of its carrying amount. If the total of the expected undiscounted future cash flows is less than the carrying amount of the asset, a loss is recognized for the difference between fair value and the carrying value of the asset. Income Taxes The Company accounts for income taxes in accordance with ASC 740, Income Taxes . Under ASC 740, deferred tax assets and liabilities are computed based on the difference between the financial reporting and income tax bases of assets and liabilities using the enacted marginal tax rate. ASC 740 requires that the net deferred tax asset be reduced by a valuation allowance if, based on the weight of available evidence, it is more likely than not that some portion or all of the net deferred tax asset will not be realized. Sales Taxes Sales tax collected from customers is excluded from revenues. Collected but unremitted sales tax is included as part of accrued liabilities in the accompanying consolidated balance sheets. Revenues do not include sales tax as the Company considers itself a pass-through conduit for collecting and remitting sales tax. Stock-Based Compensation The Company estimates the fair value of share-based awards on the date of grant. The fair value of stock options is determined using the Black-Scholes option-pricing model and the fair value of restricted stock awards is based on the closing price of the Company's common stock on the date of grant. The determination of the fair value of the Company's stock option awards and restricted stock awards is based on a variety of factors including, but not limited to, the Company's common stock price, expected stock price volatility over the expected life of awards, and actual and projected exercise behavior. Additionally, the Company has estimated forfeitures for share-based awards at the dates of grant based on historical experience, adjusted for future expectation. The forfeiture estimate is revised as necessary if actual forfeitures differ from these estimates. Advertising and Marketing Costs Advertising and marketing costs consist primarily of internet advertising, online marketing, direct mail, print media and television commercials and are expensed when incurred. Series A Special Stock The Company issued 2,750,000 shares of Series A Special stock in July 2010 in connection with an acquisition. The holders of the Series A Special stock had the right to convert those shares into common stock on a one-for-one basis and the right to vote on all matters presented to K12 stockholders, other than for the election and removal of directors, for which holders of the Series A Special stock had no voting rights. These shares were converted into common stock on September 3, 2013 and no Series A Special stock were outstanding as of June 30, 2015 and June 30, 2014. Net Income Per Common Share The Company calculates net income (loss) per share in accordance with ASC 260, Earnings Per Share . Under ASC 260, basic net income (loss) per common share is calculated by dividing net income (loss) by the weighted-average number of common shares outstanding during the reporting period. The weighted average number of shares of common stock outstanding includes vested restricted stock awards. Diluted net income (loss) per share ("EPS") reflect the potential dilution that could occur assuming conversion or exercise of all dilutive unexercised stock options. The dilutive effect of stock options and restricted stock awards was determined using the treasury stock method. Under the treasury stock method, the proceeds received from the exercise of stock options and restricted stock awards, the amount of compensation cost for future service not yet recognized by the Company and the amount of tax benefits that would be recorded in additional paid-in capital when the stock options become deductible for income tax purposes are all assumed to be used to repurchase shares of the Company's common stock. Stock options and restricted stock awards are not included in the computation of diluted net income (loss) per share when they are antidilutive. Common stock outstanding reflected in the Company's consolidated balance sheets include restricted stock awards outstanding. Securities that may participate in undistributed net income with common stock are considered participating securities. Since the Series A Shares participate in all dividends and distributions declared or paid with respect to common stock of the Company (as if a holder of common stock), the Series A Shares meet the definition of participating security under ASC 260. All securities that meet the definition of a participating security, regardless of whether the securities are convertible, non-convertible or potential common stock securities, are included in the computation of both basic and diluted EPS (as a reduction of the numerator) using the two-class method. Under the two-class method, all undistributed earnings in a period are to be allocated to common stock and participating securities to the extent that each security may share in earnings as if all of the earnings for the period had been distributed. The following schedule presents the calculation of basic and diluted net income per share: Year Ended June 30, 2015 2014 2013 (In thousands except shares and per share data) Basic earnings per share computation: Net income attributabl |